滴水逆向联盟

标题: 基于visual Studio2013解决C语言竞赛题之0907删除记录 [打印本页]

作者: 大灰狼 时间: 2014-9-5 08:07
标题: 基于visual Studio2013解决C语言竞赛题之0907删除记录
题目

解决代码及点评

<pre code_snippet_id="91880" snippet_file_name="blog_20131202_1_2646179" class="cpp" name="code"></pre><pre code_snippet_id="91880" snippet_file_name="blog_20131202_1_2646179" class="cpp" name="code"><pre code_snippet_id="91880" snippet_file_name="blog_20131202_1_2646179" class="cpp" name="code"><pre code_snippet_id="91880" snippet_file_name="blog_20131202_1_2646179" class="cpp" name="code">/*
7. 删除worker2.rec中某个序号的职工记录，
再存入原文件中（用fread和fwrite函数）
*/
#include <stdio.h>
#include <stdlib.h>
typedef struct Staff_9_7
{
int num;
char name[30];
char sex[5];
int age;
float salary;
} Employee;
/*
读取员工信息
*/
void readStaInfo_7(Employee *tempEmp)
{
Employee temp;
FILE *fp = NULL;
fopen_s(&fp, "worker2.rec","rb");
if (fp)
{
int i = 0;
fread(&temp,sizeof(temp),1,fp);
while(!feof(fp))
{
tempEmp = temp;
printf("num = %d,name = %s,sex = %s,age = %d,salary = %f\n",
tempEmp.num,tempEmp.name,tempEmp.sex,tempEmp.age,tempEmp.salary);
fread(&temp,sizeof(temp),1,fp);
tempEmp = temp;
i++;
}
fclose(fp);
}
else
{
printf("open file failed!");
}
}
/*
保存员工信息
*/
void saveEmpInfo97(Employee * emp,int n)
{
FILE *fp = NULL;
fopen_s(&fp, "worker2.rec","wb");
if (fp)
{
for (int i = 0; i < n; i++)
{
fwrite(&emp,sizeof(emp),1,fp);
}
fclose(fp);
}
else
{
printf("open file failed!");
}
}
void main()
{
const int N = 11;
int num;
int index = 0;
Employee emp[N];
Employee newEmp[N - 1];
readStaInfo_7(emp);
printf("请输入要删除员工的编号：\n");
scanf_s("%d",&num);
for (int i = 0; i < N; i++)
{
if (num == emp.num)
{
continue;
}
else
{
newEmp[index++] = emp;
}
}
saveEmpInfo97(newEmp,N - 1);
readStaInfo_7(newEmp);
system("pause");
}</pre><br><br><br></pre></pre>